通过对各种窗函数的matlab仿真，比较各种窗函数的频谱特性，并且将不同的窗函数加权到脉压信号上，观察特性的优劣-Based on all kinds of window function of matlab simulation, compare all kinds of window function, the characteristic of the frequency spectrum of and different window function weighting to the

实现了Fir汉宁窗设计II型数字低通滤波器，文件中含有子函数文件，运行成功，无错误-The Fir Hanning window design II digital low-pass filter, the file contains sub function files, run successfully, no error